CN104279690B - Static pressure air-speed control method - Google Patents
Static pressure air-speed control method Download PDFInfo
- Publication number
- CN104279690B CN104279690B CN201310290441.5A CN201310290441A CN104279690B CN 104279690 B CN104279690 B CN 104279690B CN 201310290441 A CN201310290441 A CN 201310290441A CN 104279690 B CN104279690 B CN 104279690B
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- Prior art keywords
- static pressure
- rotating speed
- speed
- fan
- vibration
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention provides a static pressure air-speed control method which comprises the following steps: A) acquiring a draught fan rotating speed after static pressure correcting; B) judging if the draught fan rotating speed after static pressure correcting falls into a rotating speed section confirmed by a vibration feature point and a vibration bandwidth, if not, confirming the draught fan rotating speed after static pressure correcting as a practical rotating speed, and if yes, secondarily correcting, thereby avoiding the draught fan rotating speed in the rotating speed section confirmed by the vibration feature point and the vibration bandwidth. According to the invention, the characteristics of the vibration point and the vibration bandwidth are fully utilized and the draught fan rotating speed is pre-corrected and secondarily corrected, so that the draught fan rotating speed can avoid a resonance section and the generation of noise is effectively prevented.
Description
Technical field
The invention belongs to filed of air conditioning, in particular relates to a kind of silent air-conditioning control method.
Background technology
With the raising of quality of life, people have higher requirement to the comfortableness of household electrical appliances.The noise of air-conditioning becomes
User selects an important index of air-conditioning.The noise of air-conditioning how is reduced, becomes the weight of each air-conditioning producer design at present
Point and difficult point.At present, air conditioner industry typically reduces product by studying the hydrodynamics in air channel, the rotating speed of reduction blower fan
Noise.However, improve that air channel often brings is that product cost is lifted；The rotating speed of undue reduction blower fan, what is often brought is
The loss of cold and hot amount, the decline of heat pump performance.
During operation of air conditioner, blower fan drives fan, rotates in a fixed shell, it will usually have one or more to resonate
Shuttle belt, each vibration carries a vibration performance point, as long as finding to avoid these shuttle belts during the realization of the present invention,
It is prevented that the generation of resonance noise, to reach the effect of static pressure.
The content of the invention
The present invention, mainly by mechanical means, there are problems that for existing reduction air conditioner noises, propose
A kind of anti-resonance static pressure wind speed control method, its concrete technical scheme is as follows：
A kind of static pressure wind speed control method, comprises the steps：
A, the revised rotation speed of fan of acquisition static pressure；
B, to judge whether revised rotation speed of fan falls interval in vibration performance point and rotating speed determined by vibration bandwidth, if
No, then revised rotation speed of fan is actual speed, if so, then by second-order correction rotation speed of fan is avoided into above-mentioned vibration performance
Point and rotating speed determined by vibration bandwidth are interval.
Further, actual speed is obtained as follows during second-order correction in step B：
Rotation speed of fan ± N* vibrations bandwidth inner blower rotating speed at actual speed=vibration performance point, wherein 1/2<N<1.
Further, revised rotation speed of fan is obtained as follows in the step A：
Static pressure amendment rear fan rotating speed=rotating speed a reference value+static pressure coefficient * rotating speed correction values.
Further, rotation speed of fan and vibration bandwidth inner blower rotating speed are equal at the rotating speed correction value, vibration performance point
In being stored in eeprom.
Further, the rotating speed a reference value is the wind speed set by Air-Conditioning Control Panel or remote control.
Further, the N values are 3/5.
Further, the static pressure coefficient is proportional with static pressure in airduct, static pressure coefficient=K*2* π * R*L, wherein, R is
The radius of airduct pipeline, L is the length of airduct pipeline, and K is constant.
Compared with prior art, advantages of the present invention and good effect are as follows：
Anti-resonance static pressure wind speed control method of the present invention, by carrying out to rotation speed of fan with reference to vibration performance point and shuttle belt
Amendment, can effectively avoid shuttle belt, so as to the generation for avoiding resonating, effectively suppress noise, to reach the effect of static pressure.
Specific embodiment
The present invention is described in further details with reference to embodiment.
A kind of static pressure wind speed control method, comprises the steps：
Step 1, the revised rotation speed of fan of acquisition static pressure；
This step purpose is that the rotation speed of fan to user's setting carries out pre-corrected, to increase the accommodation of rotation speed of fan,
By pre-corrected rotation speed of fan can be made to adapt to the air-conditioning of different type of machines and different air channels length.The present embodiment obtains static pressure amendment
Rotation speed of fan afterwards mainly passes through equation below：
Static pressure amendment rear fan rotating speed=rotating speed a reference value+static pressure coefficient * rotating speed correction values, wherein, rotating speed a reference value, i.e.,
It is wind speed setting, user can be set by Air-Conditioning Control Panel or remote control；Static pressure coefficient can divide different class, this enforcement
Example static pressure coefficient it is proportional with static pressure in airduct, certainly can be according to actual static pressure requirement depending on, for example, 0Pa, 15Pa, 30Pa,
The corresponding static pressure coefficients of 50Pa can be respectively 0,5,10,15, also can be obtained by equation below：Static pressure coefficient=K*2*
π * R*L, wherein, R is the radius of pipeline, and L is the length of pipeline, and K values are for the pipeline for determining material and determination smoothness of inner wall
It is a constant, also has certain relation with the pipe bending degree of actual installation.The static pressure of general meeting round numbers in practical application
Coefficient.For example, for the pipeline of certain material, K=2.5, R=0.15m, L=2m, calculated static pressure coefficient=4.71 are desirable quiet
Pressure coefficient is 5.Rotating speed correction value is main relevant with the length of airduct, and we can obtain the air-conditioning of corresponding type by experiment in advance
Rotating speed correction value and duct length between relation, to obtain optimal correction value.
Certainly above-mentioned rotation speed of fan also directly can be obtained by tabling look-up, the table makes in advance to be deposited in eeprom,
Air-conditioner controller voluntarily matches optimal rotation speed of fan according to user's setting.
Step 2, judge revised rotation speed of fan whether fall vibration performance point and vibration bandwidth determined by rotating speed area
Between, if it is not, it is actual speed to be then not required to correct revised rotation speed of fan in step 1 again, if so, then actual speed presses following public
Formula is obtained：
Rotation speed of fan ± N* vibrations bandwidth inner blower rotating speed at actual speed=vibration performance point, wherein 1/2<N<1.
The purpose of this step is mainly by carrying out second-order correction to rotation speed of fan so that it avoids resonant belt, ordinary circumstance
Lower N takes 3/5, so can ensure rotation speed of fan vibration performance point and vibration bandwidth determined by rotating speed interval before or after,
Wherein, rotation speed of fan and vibration bandwidth inner blower rotating speed are obtained by test of many times at vibration performance point.
The present invention makes full use of the characteristic of oscillation point and vibration bandwidth, by pre-corrected being carried out to rotation speed of fan, secondary being repaiied
Just, it is ensured that rotation speed of fan avoids resonant belt, effectively prevents the generation of noise.
The above-mentioned formula of the present invention is drawn by multiple experimental demonstration, now illustrates this by an example
It is bright how such as by being modified to rotation speed of fan with reference to vibration performance point and shuttle belt, so as to avoid resonate generation, have
Effect suppresses noise.
In experimentation, when adjustment of rotational speed is 820 revs/min after wind speed static pressure amendment, the monitoring of noise laboratory is made an uproar
Sound detects noise and vibration up to 48.2 decibels, and vibration is most violent when rotation speed of fan is 827 revs/min, in being with 827 revs/min
Heart point, 812 revs/min of -842 revs/min of vibrations more acutely, position shuttle belt.820 revs/min of target wind speed, falls in vibration zone
Between, need to correct wind speed.
It is by the revised wind speed of formula：
827 revs/min-(3/5) * (842 revs/min -812 revs/min)=805 revs/min.
Test result indicate that, when rotating speed is 805 revs/min, detection noise can be reduced to 45.7 decibels.
The above, is only presently preferred embodiments of the present invention, is not the restriction for making other forms to the present invention, is appointed
What those skilled in the art changed possibly also with the technology contents of the disclosure above or be modified as equivalent variations etc.
Effect embodiment is applied to other fields, but every without departing from technical solution of the present invention content, according to the technical spirit of the present invention
Any simple modification, equivalent variations and the remodeling made to above example, still falls within the protection domain of technical solution of the present invention.
Claims (6)
1. a kind of static pressure wind speed control method, comprises the steps：
A, the revised rotation speed of fan of acquisition static pressure；
B, to judge whether revised rotation speed of fan falls interval in vibration performance point and rotating speed determined by vibration bandwidth, if it is not,
Then revised rotation speed of fan is actual speed, if so, then by second-order correction rotation speed of fan is avoided into above-mentioned vibration performance point
It is interval with rotating speed determined by vibration bandwidth；
Actual speed is obtained as follows during second-order correction in step B：
Rotation speed of fan ± N* vibrations bandwidth inner blower rotating speed at actual speed=vibration performance point, wherein 1/2<N<1.
2. static pressure wind speed control method according to claim 1, it is characterised in that：Revised blower fan in the step A
Rotating speed is obtained as follows：
Static pressure amendment rear fan rotating speed=rotating speed a reference value+static pressure coefficient * rotating speed correction values.
3. static pressure wind speed control method according to claim 2, it is characterised in that：The rotating speed correction value, vibration performance
Rotation speed of fan and vibration bandwidth inner blower rotating speed are stored in eeprom at point.
4. static pressure wind speed control method according to claim 3, it is characterised in that：The rotating speed a reference value is by air-conditioning
Control panel or the wind speed of remote control setting.
5. static pressure wind speed control method according to claim 1, it is characterised in that：The N values are 3/5.
6. static pressure wind speed control method according to claim 2, it is characterised in that：The static pressure coefficient is counted as follows
Calculate：
Static pressure coefficient=K*2* π * R*L, wherein, R is the radius of airduct pipeline, and L is the length of airduct pipeline, and K is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310290441.5A CN104279690B (en) | 2013-07-11 | 2013-07-11 | Static pressure air-speed control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310290441.5A CN104279690B (en) | 2013-07-11 | 2013-07-11 | Static pressure air-speed control method |
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| CN104279690A CN104279690A (en) | 2015-01-14 |
| CN104279690B true CN104279690B (en) | 2017-04-19 |
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| CN201310290441.5A Active CN104279690B (en) | 2013-07-11 | 2013-07-11 | Static pressure air-speed control method |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288135A (en) * | 2015-06-05 | 2017-01-04 | 青岛海尔空调电子有限公司 | The method of adjustment of the rotation speed of fan of air-conditioning |
| CN105066369B (en) * | 2015-09-02 | 2018-06-19 | 杭州先途电子有限公司 | Air conditioner constant air capacity control |
| CN107576009B (en) * | 2017-08-01 | 2023-07-25 | 珠海格力电器股份有限公司 | Air conditioner control method and device and air conditioner |
| CN111121120B (en) * | 2018-10-31 | 2021-12-24 | 宁波方太厨具有限公司 | Double-direct-current fan rotating speed control method and system and range hood |
| CN109631247A (en) * | 2018-11-13 | 2019-04-16 | 青岛海尔空调电子有限公司 | Design method is evaded in air conditioner and its resonance |
| JP2021046994A (en) * | 2019-09-20 | 2021-03-25 | 株式会社富士通ゼネラル | Air conditioning device |
| CN110529908A (en) * | 2019-09-29 | 2019-12-03 | 珠海格力电器股份有限公司 | The method of range hood control |
| CN110726163A (en) * | 2019-10-23 | 2020-01-24 | 珠海格力电器股份有限公司 | Range hood and noise reduction device and method thereof |
| CN110986259A (en) * | 2019-11-04 | 2020-04-10 | 珠海格力电器股份有限公司 | Static pressure adjusting device and silence fresh air handling unit of noise reduction |
| CN111550899B (en) * | 2020-05-07 | 2023-08-15 | 宋彦震 | Control method for eliminating air conditioner resonance by self-adaptive speed regulation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2255421A (en) * | 1991-05-02 | 1992-11-04 | * Norm Pacific Automation Corporation | Noise control of air conditioner |
| CN1584434A (en) * | 2003-08-19 | 2005-02-23 | 松下电器产业株式会社 | Air conditioner |
| CN101603718A (en) * | 2009-07-23 | 2009-12-16 | 青岛海信日立空调系统有限公司 | A kind of automatic identifying method of static pressure of air duct type air conditioning indoor machine and system thereof |
| CN102345916A (en) * | 2011-08-29 | 2012-02-08 | 深圳市锐钜科技有限公司 | Method and system for eliminating frequency resonance for frequency conversion air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09159255A (en) * | 1995-12-07 | 1997-06-20 | Matsushita Seiko Co Ltd | Inverter |
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2013
- 2013-07-11 CN CN201310290441.5A patent/CN104279690B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2255421A (en) * | 1991-05-02 | 1992-11-04 | * Norm Pacific Automation Corporation | Noise control of air conditioner |
| CN1584434A (en) * | 2003-08-19 | 2005-02-23 | 松下电器产业株式会社 | Air conditioner |
| CN101603718A (en) * | 2009-07-23 | 2009-12-16 | 青岛海信日立空调系统有限公司 | A kind of automatic identifying method of static pressure of air duct type air conditioning indoor machine and system thereof |
| CN102345916A (en) * | 2011-08-29 | 2012-02-08 | 深圳市锐钜科技有限公司 | Method and system for eliminating frequency resonance for frequency conversion air conditioner |
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| CN104279690A (en) | 2015-01-14 |
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